How to generate buildings with distinct architecture using city engine?

[mansimittal1]

When we have distinct architectures of buildings ,then how can we create such buildings in city engine?Do we have to create cga rule file separately for each distinct architecture buildings or there is other solution?

[CherylLau]

There are simple building rules in ESRI.lib.  Building_From_Footprint.cga takes as input a 2D initial shape representing the building footprint.  Building_From_Mass_Texturizer.cga takes as input a 3D mass model of the building and puts textures on it.  Building_From_OpenStreetMap.cga is for 2D footprints from OpenStreetMap data which may have object attributes specifying heights or colors (i.e. height, building__levels, roof__height, roof__shape, building__colour, roof__colour).